ZD (VSD) Oil-free Medium Pressure Screw Compressor with High Pressure Piston Booster

ZD compressor and booster combination with energysaving VSD option

ZD (VSD) Oil-free Medium Pressure Screw Compressor with High Pressure Piston Booster

Whether you need medium, high pressure or both, the ZD (VSD) high pressure screw compressor and booster delivers 100% oil-free dry air or nitrogen.

 Energy savings

Four -stage compression with intercooling is more efficient than three-stage piston designs. The MD dryer also improves the compression efficiency of the booster.

 Air purity

ZDs are ISO 8573-1 Class 0 certified, which means no oil will enter your air or nitrogen network, minimizing product contamination risk.

 Hybrid technology

ZD is a combination of well-known oil-free screw, adsorption dryer and booster technology. Designed to increase system efficiency and reliability.

 Low maintenance costs

Thanks to the hybrid system design, the ZD reduces the number of components which increases component lifetime, extends maintenance intervals and reduces maintenance costs.

 Re-use your energy

Thanks to the optional heat recovery unit, you can reduce energy cost by using the hot water generated in your production system by boilers, showers, cleaning processes.

 VSD for more savings

The Variable Speed Drive makes the ZDs on average 35 % more energy-efficient than fixed-speed compressors. MD dryer uses the heat of compression for further savings.

ZD range: smart air and nitrogen boosters

Our ZD (VSD) hybrid solution combines the advantages of oil-free screw technology, drum type adsorption dryer and the well-known piston booster technology. The result is in 100% oil-free dry air or nitrogen for medium- and high-pressure applications such as:

  • PET Industry : blowing
  • instrument air
  • natural nitrogen vent capturing
  • soot blower air

The ZD system is easy to install and easy to use: no complex connections or foundations are required. Z compressor and D booster can be used in parallel or separately reaching different levels of pressure ratios between 25 and 40 bar, which saves you maintenance time and costs.

Four-stage air compression with high-efficiency intercooling maximises compression efficiency. More savings can be achieved with adding Variable Speed Drive (VSD) and energy recovery.

Technical specifications

Capacity FAD l/s

221 l/s - 1,127 l/s

Capacity FAD

796 m³/h - 4,057 m³/h

Working pressure

25 bar(e) - 42 bar(e)

Installed motor power

155 kW - 815 kW


 ZD 800-1200 & ZD 1200 VSD air-cooled